<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-button type="primary">添加角色</el-button>
      <el-table :data="roleList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['dbbottom', i1 === 0 ? 'dbtop' : '']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <el-col :span="5">
                <el-tag> {{ item1.authName }}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="19">
                <el-row
                  :class="[i2 === 0 ? '' : 'dbtop']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6"
                    ><el-tag type="success"> {{ item2.authName }}</el-tag
                    ><i class="el-icon-caret-right"></i
                  ></el-col>
                  <el-col :span="18">
                    <el-tag
                      :class="[i3 === 0 ? '' : 'dbtop']"
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                      type="warning"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column
          type="index"
          label="#"
          align="center"
        ></el-table-column>
        <el-table-column
          label="角色名称"
          prop="roleName"
          align="center"
        ></el-table-column>
        <el-table-column
          label="角色描述"
          prop="roleDesc"
          align="center"
        ></el-table-column>
        <el-table-column label="操作" align="center">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete">删除</el-button>
            <el-button
              type="warning"
              icon="el-icon-setting"
              @click="show(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <el-dialog
      title="分配权限"
      :visible.sync="showDialogVisible"
      width="50%"
      @close="closeshow"
    >
      <el-tree
        :data="rightslist"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="showDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allot">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      roleList: [],
      rightslist: [],
      showDialogVisible: false,
      //树形控件
      treeProps: {
        label: "authName",
        children: "children",
      },
      defKeys: [],
      roleId: "",
    };
  },
  created() {
    this.getRoleList();
  },
  methods: {
    async getRoleList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status != 200)
        return this.$message({
          message: "获取角色列表失败",
          type: "error",
          duration: 1000,
        });
      this.roleList = res.data;
    },
    async show(role) {
      this.roleId = role.id;
      const { data: res } = await this.$http.get("rights/tree");
      if (res.meta.status != 200)
        return this.$message({
          message: "获取权限列表失败",
          type: "error",
          duration: 1000,
        });
      this.rightslist = res.data;
      this.getLeafKeys(role, this.defKeys);
      this.showDialogVisible = true;
    },
    getLeafKeys(node, arr) {
      if (!node.children) return arr.push(node.id);
      node.children.forEach((item) => this.getLeafKeys(item, arr));
    },

    closeshow() {
      this.defKeys = [];
    },
    async allot() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ];
      const idStr = keys.join(",");
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        {
          rids: idStr,
        }
      );
      if (res.meta.status != 200)
        return this.$message({
          message: "更新权限失败",
          type: "error",
          duration: 1000,
        });
      this.$message({
        message: "更新权限成功",
        type: "success",
        duration: 1000,
      });
      this.getRoleList();
      this.showDialogVisible = false;
    },
  },
};
</script>
<style lang="less" scoped>
.el-tag {
  margin: 8px;
}
.dbtop {
  border-top: 1px solid #eee;
}
.dbbottom {
  border-bottom: 1px solid #eee;
}
</style>
